BBC1 is to show a 60-minute episode of The One Show each week from September after trialling the format back in May.

The specific day has yet to be confirmed but the magazine show will have an extended episode through to the end of the year.

Executive producer Tessa Finch described the hour-long programmes as “a great vote of confidence from the audience and the channel” and that the autumn season would feature “a brilliant line-up of stories from all around the UK and some extremely exciting projects for viewers to get involved with”.

The show’s regular presenters, Christine Bleakley and Adrian Chiles, will take a fortnight’s break in August when they will be replaced by Gloria Hunniford and Gethin Jones (17-21 August), and John Sergeant and Myleene Klass (24-28 August).

The One Show, which was two years old on last month, has been pulling in an average of 4.4m viewers in 2009.